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Finding the Fourth Proportional to 13,493.79, 20,224.28 and 6,916.39

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Solution

The fourth proportional to 13,493.79, 20,224.28 and 6,916.39 is: 10,366.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,493.79 : 20,224.28 = 6,916.39 : x
  2. Step 2: Convert to fraction form
    13,493.79/20,224.28 = 6,916.39/x
  3. Step 3: Cross multiply
    13,493.79x = 20,224.28 × 6,916.39
  4. Step 4: Simplify right side
    13,493.79x = 139,878,974.68
  5. Step 5: Solve for x
    x = 139,878,974.68/13,493.79
  6. Step 6: Final answer
    x = 10,366.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.